Raytheon STD 21 GPS Operation Manual page 28

Figure 17: Display to select "Panel Setup"
Select "Panel Setup" using soft key "Select Menu" and then operating the soft key "Set".
Return to the basic menu "GPS. Pos" by using "Select Menu" to select "Exit" and then
operating "Set", or automatically after approx. 10 seconds.
Figure 18: Display "Panel Setup"
Operate soft key "Select" to select the desired volume.
Volume 1 is the lowest volume, volume 4 is the maximum.
Operate the soft key "Test Horn" to test the selected volume.
Operate the soft key "Set" to apply the selected volume.
Return to the basic menu "GPS. Pos" either with "Select" to "Exit" and then operating
soft key "Set", or automatically after approx. 10 seconds.
PLEASE NOTE: The volume must be adjusted in accordance with background noise.
3717/110--850.DOC020002
Satellite Compass
GPS
Select
Menu 068.7°
HEADING
Panel Setup
Service
Exit
Panel Setup
Select
Volume 1
Volume 2
Volume 3
Volume 4
Softw.--Version
130--613.P01.E10.00
Exit
An alarm has to be recognized clearly under all operating conditions
of the ship.
STD 21 GPS
Dim
up
Contrast
Dim
down
Set
Test
Horn
Set
20
Edition: Feb. 05, 2007